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. 2020 Jun 30;20(13):3682. doi: 10.3390/s20133682

Figure 8.

Figure 8

Test measurement with two and three sensors. On the left-hand side, the two sensors measurement on the right-hand side the three sensors measurement is visible. For better visuality in the bottom row, top views are also shown. (x,y: x,y space axis, z-axis: probability of solid object in an x,y defined position).